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EL 4ltr stroker 

 

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 Post subject: EL 4ltr stroker
Posted: Wed Jun 28, 2006 8:35 pm 
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hey guys my old boy has just decided he wants to build a 4 ltr stroker in the old xr6 wagon. i am a newbie to this site so sorry if this has been a very repeticious question but any info on cost and what is involved would be appreciated.

cheers guys
ben
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 Post subject: Re: EL 4ltr stroker
Posted: Wed Jun 28, 2006 8:44 pm 
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rannaman wrote:
hey guys my old boy has just decided he wants to build a 4 ltr stroker in the old xr6 wagon. i am a newbie to this site so sorry if this has been a very repeticious question but any info on cost and what is involved would be appreciated.

cheers guys
ben


Why you would want to stroke a 4l is beyond me. The stroke is already ridiculously long.

 

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Posted: Wed Jun 28, 2006 8:56 pm 
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long story short, i dont think you can stroke a 4L.

 

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Posted: Wed Jun 28, 2006 8:58 pm 
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you can stroke it but there'll be no advantage to it.
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Posted: Wed Jun 28, 2006 9:02 pm 
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ok guys thanx for that. like i sed im a newbie to the ford stuff im more interested in my toranas so i no zipo about the ford gear.
what would you guys recomend that i do with the wagon then? big injectors cam and a chip... what sort of power can the stock head flow?
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Posted: Wed Jun 28, 2006 9:04 pm 
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head is good for 150rwkw 'ish. Same with the stock injectors

maybe start here - http://www.fordmods.com/forums/viewtopic.php?t=66

 

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Posted: Wed Jun 28, 2006 9:09 pm 
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you'd get more benifit from DE-stroking it back to 3.8 using a 40thou bore.

at least then you could rev the thing

 

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Posted: Wed Jun 28, 2006 9:18 pm 
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thankx guys for the info most helpfull. might go for a small super charger instead of stroking idea! :P
just out of curiousity what is the bore and stroke of the old 4 ltr??
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Posted: Wed Jun 28, 2006 9:21 pm 
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how would oversizing the bore 40" decrease cacpacity? unless your talking about bore to stroke ratio or something??
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Posted: Wed Jun 28, 2006 9:28 pm 
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rannaman wrote:
thankx guys for the info most helpfull. might go for a small super charger instead of stroking idea! :P
just out of curiousity what is the bore and stroke of the old 4 ltr??


be careful with that idea - a small supercharger will choke a 4.0 so make sure its big enough. Dont go any smaller than a m90 or powerdyne or you wont be happy with the outcome

btw - bore is ~92mm, stroke is ~99mm

 

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Posted: Wed Jun 28, 2006 9:33 pm 
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ok then cheers for that mate ill look into the blower side of it some more i think.
ben
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Posted: Wed Jun 28, 2006 9:34 pm 
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Surely there would be a gain by stroking it out to 4.2 -4.3 litres? I know the stroke is long, but it's not like the 4.0 litre is a revvy unit to begin with?

It would be an interesting excersize :D Maybe if I win tatts one day, I'll do it for s**t and giggles.

But yeah, when modding the Falcon 6, speak to as MANY people as you can.
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Posted: Wed Jun 28, 2006 9:39 pm 
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downingj wrote:
Surely there would be a gain by stroking it out to 4.2 -4.3 litres? I know the stroke is long, but it's not like the 4.0 litre is a revvy unit to begin with?

It would be an interesting excersize :D Maybe if I win tatts one day, I'll do it for s**t and giggles.

But yeah, when modding the Falcon 6, speak to as MANY people as you can.


The 4.0 doesnt rev because its already a stroker. The geometry is really poor in the bottom end.

Long strokes are good for tractors or passenger cars but not good for performance.

 

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Posted: Wed Jun 28, 2006 9:42 pm 
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rannaman wrote:
how would oversizing the bore 40" decrease cacpacity? unless your talking about bore to stroke ratio or something??



it wouldn't.
what i was saying is decrease the stroke to to the piont at which you get 3.8L when using a 40thou over bore.

you would end up with a square engine at about 93.3mm stroke and bore with a piston speeds of 4285 at 7000rpm
as aposed to 4561 for the stock stroke.

you'd also get a 6mm longer rod which will help alot witht he poor stroke rod ratio the engine has

 

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Posted: Wed Jun 28, 2006 11:11 pm 
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ok then fellas so i gota try and square the old girl up as its got a huge stroke already i get yas cheers for the input much appreciated!
ben
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